I'm sure that I'm not the first or only person to come up with this antenna design, but here's what I use at AB5L:
http://www.dickblue.com/images/6m-loop.bmp
Also, I just got a 8.3439 mc crystal in the mail today, and that can only mean one thing: The 50.063 mc beacon will be back on the air from Ft Worth shortly.
-Marty, AB5L